Apparatus for drawing glass cylinders.



W1 A155555 I A719 A1/MAW we W; R. CAMPBELL. APPARATUS FOR DRAWING GLASS GYLINDERS,

. A "v APPLICATION FILED 15210.15. 1913. A Y fi 9 @Qfya Patented Dec. 29, 1914.

' 2 SHEETS-SHEET 1,

www

y W. RA CAMPBELL. APPARATUS FOB. DRAWING GLASS GYLIN'DERS.

, .APPLXGATION FILED DBG.15. 1913. n

. Patented Dec.29,19l4.

/N VEN TOR *WILLIAM R. CAMPBELL, OF LANCASTER, OHIO.

APPARATUS'FOR DRAl/'ING GLASS CYLINDERS.

Specification of Letters Patent. i Paterltd Dec. 29, 1914i.

Application led December 15, 1913. Serial No. 806,870.

To all whom tt' may concern Be it known that I, WILLIAM R. CarrinELL, of Lancaster, in the county of Falr` lield and State of Ohio, have invented certain new and useful Improvements .in Apparatus for Drawing Glass Cylinders; and I do hereby declare the following to be a full, clear, and exact description of the 1nvention, such as will enable others skilled 1n the art towhich is appertains to make and use Athe same.

. 'der that isin Contact with the drawing tool,

sufficiently heated during the entire drawing operation, to prevent it from cracking or breaking away from said tool. l

-With this object in view, my invention consists in the parts and combination of parts and in the details of construction as will be more fully described and pointed out in the claims. n

In the accompanying drawings, Figure 1 is a' view in side elevation of a glass drawing i apparatus embodying my invention; Fig. 2 is an end view of same; Fig. 3 is a view partly in section and partly in elevation of the bait detached and Fig. 4f is a view partly in section and partly in elevation of a glass drawing apparatus showing the parts adapted for a bottom blowI l represents the receptacle from which the cylinder is drawn. rlhis receptacle may be a pot from which the glass Hows from the tank, or into which the glass is ladled from the tank, or a orehearth, or dog house or extension from the tank itself, hence by the term pot, I intend to include any receptacle for the glass. For the purpose of illustration however, I have shown my improvement in connection with a tilting pot construction which is disclosed in my pending' application No. 799,150 tiled by me September' .27th, 1913. This construction comprises two pots 1, carried by a tilting frame 2, the latter having tables 8 located end to end and at an angle of ninety degrees on which the pots l are carried, so that when one pot is in a horizontal position. under the drawing apparatus, the other pot will be in a vertical position adjacent to a furnace fl, the heat from vwhlch melts the surplus glass reina1ning after the drawing operation, and perthe receptacle.

' eliminated.

mits it to drain into a suitable receptacle 1ocated below the pot. The tilting frame 2, is mounted on the turn table 5, which is rotated by the motor 6, gearing 7 and shaft 8, and the tables 3 with the pots thereon, are turned by the motor 9 and worin 10 vand worm wheel 11, the worm wheel 11, being secured to the shaft 12 to which the table frames 2 are secured. By rotating the turn table one-half revolution, and giving to the shaft 1Q a quarter turn, the pot 1, which is shown in a vertical position, will be .turned to a horizontal position ready to receive a batch of glass, and the horizontal pot will be turned to a vertical position in front of the furnace.

Located over the pot l, are the vertical guides 13 for the cage 14, the latter having a slotted seat 15, in which the stemvl of the drawing tool 17 rests, the ysaid. stem having a collar 18 resting on the seat; the cage is moved' vertically by the cable 19 connected with a suitable motor, and as it moves, either up or down, it carries with ittbo tool or bait 17.

The drawing tool or bait 17 shown in detail in Figs. 3 and 4, is in the form of an inl verted hollow cylindrical receptacle provided at its lower open end with an inwardly projecting fiange 19, shaped to form an annular groove or gutter around the entire lower edge of the tool, so that when the tool is lowered into the molten glass, the latter willrun into the said groove or gutter, and adhere thereto s'o that when the cage with the bait carried thereby is elevated, the glass will be drawn up into the form ot a cylin der in the well known manner.

Located within the hollow receptacle 17, is the conical deliector 20, the diameter of which conforms to the-internal diameter oi' This detlector may stop short of the si de walls of the receptacle, or it may be notched or perforated adjacent said side walls as shown at 21, so that the heated air passing through or filling the cylinder will be deflected by the deflector 2() and caused to come into close contact with the upper end of cylinder, and maintain the ,latter at such temperature that all danger of -fracture due to chilling will be entirely Theheated air is thus all de` lected toward the sides of the delector, and passes over and into contactwith the upper edge of the cylinder, and from, thence up iii-to the chamber above the deflector, and

any excess over o predetermined pressure esce ses hrowzh the 22 in the 'top of tl drawing bool. air pressure is ulated by i Selrelvee to maintain bhe eyliir der et its proper diameter, hence any rednetionin pressure below normal, v lowed instantly by Ythe eoiorl all the valves. A s 'the air entere the cylinder, and is heeuecl by the hot glues olf 'the eylinder, it ill be eee-ii time .iig operates to keep the glass; oi? the. eflinder, throughou the length the latter, siiieiently hot teprevent chilling sulileient to cause undue contraction. ln the eenL ruotion shown in Figs. i, *E2 and. 5, the air is carried by e flexible or jointed pipe to the hollow stein 1G in the top of the drzrwing` tool or bait, and when the top blow is Uee'l, l beat the air in said pipe by ineens oi e furnace Q5, shown in Fig. l, the furnace embracing section or' the air pipe intermediate the blower or Storage taille, and the jointed section oit 'the pipe.

ln Fig. have shown my improved beit` in connection with a bottom blow. Vith this latter construction, the pot l ie provided with a central duct 2G, and 27 is o refractory block located within the pot and provided with a duet which forros o oontinuetion of the duet 2G, and terminates above the level of the glass in the pob. The lower e2; :l oi" the duet 2G, is in eoinn'ninicetion wibo an air pipe 23a, .vhieh leads from a blower or fan actuated bv a motor 29, and through a furnace or heating Lharnbei: 25', before enterin` the po, so that the air as it entere the Cylinder being drawn will be highly heated. `lfvith this construction the stein 2l of the bait 17 is solid instead of hollow, as in the other construction.

Yllfith the top blow construction the eil.' entere the cylinder' through the bait, the surplus, after the necessary pressure has been attained,,passing out through the valves 22.

W ith the bottoni blow Construction shown in F101 Ll- :ill the zur meses u )wardlv 'through z3 i l :J

i the cylinder, the excess, after the necessary pressure has been attained, paeeing out through the valve.

It is evidenb that many slighty changes might be resorted to in the relative arrangement ot' parte shown and described without departing from the spirit and Scope ot' .my invention. .lilenee .l-would have it understood that .l do not. wish to nonlineinyselif to the exart eonetruction 4and arrangrim-fnt oll parte shown and described, but

lflaving fully described my invention who?.

-with :in internal annular .groove or guider above the internal groove for deleeing l eleini es new and tere-eten, i.s:`

l. A. glee@ drawing ool provided inwardly 'burned et, e defeetor located within "l above the inwardly tornei'. o ter, for detleeting the .hot liznige.

f2. gloss drawing tool' Closed o; and open at its bottom ai l :provi ed lower open eed wim an interner' groove, deflector within the )el .eeiol groove for delieetine the later, and av valve in above the oleleeuor.

3. il glass drawing tool eoinprising lindrieal body open et .its lower er provided et said open end with :in i annuler groove or gutter, o. conical cleleete within seid body and in plone above Y groove for detieeting the lit air 'toward Sz groom, and :i valve in 'the top of tie be above the delleooor.

il. drawing tool compil in,` o eyli cal body open :it its lower end and promo at said open end with an internal onn groove or gutter, o. detleetor within em body :ind in :i plane above 'the intern groove for de'leeting the het iir toward groove or gutter, e valve in the body of he tool above the deleetor, in air pipe for s plying air to the cylinder drawn by ,A drawing tool and ineens for heating the av. before it enters the cylinder.

5. A. drawing tool ooinprieing o eylini cal body Cloeed' at 'the/top and ogen lower end, and provided .fw its operi 'the g he top of detleetor 4vi hin said body and in :i it

hot nir toward seid groove or gutter, o, pif leading into seid Jeool for supplying oir the cylinder being drawn, and a valve in i body olf the tool above the deleetor.

G. The Combination ol'l a clrziwingtool 'o vided with on inwardly 'turned liange ne it lower (nil. o, de'lieetor for doi'lee'ting 'the bo'u air over the flange, a pipe for supplying hoi; air to the o vlinder being,l drawn by the tool and means for heating the air before it enters the cylinder.

In testimony whereof, l have signed this; i io speeilieatiou in the presence of two Subscrib-l ing` .vitnesses.

WHJLIAM ll, CAMPBELL.

litnessee T. T. CoUR'rizioH'r, l. H. lli/orme. 

